Table of contents
Location of important la bels ............1-1
Safety information ............................2-1
Description ........................................3-1
Left view ..........................................3-1
Right view ........................................3-2
Controls and instruments ................3-3
Instrument an d control functions ....4-1
Handlebar switch ............................4-1
Clutch lever .....................................4-1
Shift pedal .......................................4-2
Brake lever ......................................4-2
Brake pedal .....................................4-3
Fuel tank cap ...................................4-3
Fuel ..................................................4-3
Fuel tank breather hose...................4-6
Fuel cock .........................................4-6
Starter (choke) knob ........................4-7
Kickstarter .......................................4-7
Seat .................................................4-7
Adjusting the front fork ....................4-8
Front fork bleeding ........................4-10
Adjusting the shock absorber assembly ....................................4-11
Removable sidestand ....................4-14
YPVS system .................................4-14 For your safety – pre-operation
checks
............................................... 5-1
Operation an d important ri din g
points ................................................. 6-1
Engine break-in............................... 6-1
Starting and warming up a cold engine .......................................... 6-2
Starting a warm engine................... 6-3
Shifting............................................ 6-3
Parking ............................................ 6-4
Perio dic maintenance an d
a d justment ........................................ 7-1
Periodic maintenance and lubrication chart .......................... 7-2
Checking the spark plug................. 7-7
Transmission oil .............................. 7-8
Coolant ........................................... 7-9
Cleaning the air filter element ....... 7-11
Adjusting the carburetor ............... 7-13
Adjusting the engine idling speed......................................... 7-13
Adjusting the throttle grip free play ............................................ 7-13
Tires .............................................. 7-14
Spoke wheels ............................... 7-16
Adjusting the clutch lever free play ............................................ 7-16
Checking the brake lever free play ............................................ 7-17 Checking the shift pedal ............... 7-18
Checking the front and rear brake
pads ........................................... 7-18
Checking the brake fluid level ....... 7-19
Changing the brake fluid ............... 7-20
Drive chain slack ........................... 7-20
Cleaning and lubricating the drive chain .......................................... 7-22
Checking and lubricating the cables ........................................ 7-22
Checking and lubricating the
throttle grip and cable ............... 7-23
Checking and lubricating the brake and clutch levers ............. 7-23
Checking and lubricating the brake pedal ................................ 7-24
Lubricating the rear suspension.... 7-24
Lubricating the swingarm pivots ... 7-24
Checking the front fork ................. 7-25
Checking the steering ................... 7-25
Checking the wheel bearings ........ 7-26
Supporting the motorcycle ........... 7-26
Front wheel ................................... 7-26
Rear wheel .................................... 7-27
Troubleshooting ............................ 7-29
Troubleshooting chart ................... 7-30
Motorcycle care an d stora ge .......... 8-1
Matte color caution ......................... 8-1
Care................................................. 8-1
Storage............................................ 8-3
UB4B83E0.book Page 1 Thursday, September 9, 2021 8:47 AM
Safety information
2-2
2
Many accidents involve inexperi-
enced operators.
• Make sure that you are qualified and that you only lend your mo-
torcycle to other qualified oper-
ators.
• Know your skills and limits. Staying within your limits may
help you to avoid an accident.
• We recommend that you prac- tice riding your motorcycle until
you have become thoroughly
familiar with the motorcycle and
all of its controls.
Many accidents have been
caused by error of the motorcycle
operator. A typical error made by
the operator is veering wide on a
turn due to excessive speed or un-
dercornering (insufficient lean an-
gle for the speed). Never travel
faster than warranted by condi-
tions.
Ride cautiously in unfamiliar ar-
eas. You may encounter hidden
obstacles that could cause an ac-
cident.
The posture of the operator is im-
portant for proper control. The op-
erator should keep both hands on
the handlebar and both feet on the
operator footrests during opera-
tion to maintain control of the mo-
torcycle.
Never ride under the influence of
alcohol or other drugs.
Be sure the transmission is in neu-
tral before starting the engine.
Protective Apparel
The majority of fatalities from motorcy-
cle accidents are the result of head in-
juries. The use of a safety helmet is the
single most critical factor in the pre-
vention or reduction of head injuries. Always wear an approved helmet.
Wear a face shield or goggles.
Wind in your unprotected eyes
could contribute to an impairment
of vision that could delay seeing a
hazard.
The use of a jacket, heavy boots,
trousers, gloves, etc., is effective
in preventing or reducing abra-
sions or lacerations.
Never wear loose-fitting clothes,
otherwise they could catch on the
control levers, footrests, or wheels
and cause injury or an accident.
Always wear protective clothing
that covers your legs, ankles, and
feet. The engine or exhaust sys-
tem become very hot during or af-
ter operation and can cause
burns.
Avoi d Car bon Monoxi de Poisonin g
All engine exhaust contains carbon
monoxide, a deadly gas. Breathing
carbon monoxide can cause head-
aches, dizziness, drowsiness, nausea,
confusion, and eventually death.
Carbon Monoxide is a colorless, odor-
less, tasteless gas which may be pres-
ent even if you do not see or smell any
engine exhaust. Deadly levels of car-
bon monoxide can collect rapidly and
you can quickly be overcome and un-
able to save yourself. Also, deadly lev-
els of carbon monoxide can linger for
hours or days in enclosed or poorly
ventilated areas. If you experience any
symptoms of carbon monoxide poi-
UB4B83E0.book Page 2 Thursday, September 9, 2021 8:47 AM
Safety information
2-4
2products or having other modifications
performed to your vehicle that change
any of the vehicle’s design or operation
characteristics can put you and others
at greater risk of serious injury or
death. You are responsible for injuries
related to changes in the vehicle.
Keep the following guidelines in mind,
as well as those provided under “Load-
ing” when mounting accessories.
Never install accessories that
would impair the performance of
your motorcycle. Carefully inspect
the accessory before using it to
make sure that it does not in any
way reduce ground clearance or
cornering clearance, limit suspen-
sion travel, steering travel or con-
trol operation.
• Accessories fitted to the han- dlebar or the front fork area can
create instability due to improp-
er weight distribution. If acces-
sories are added to the
handlebar or front fork area,
they must be as lightweight as
possible and should be kept to
a minimum. • Bulky or large accessories may
seriously affect the stability of
the motorcycle. Wind may at-
tempt to lift the motorcycle, or
the motorcycle may become
unstable in cross winds.
• Certain accessories can dis- place the operator from his or
her normal riding position. This
improper position limits the
freedom of movement of the
operator and may limit control
ability, therefore, such accesso-
ries are not recommended.
Use caution when adding electri-
cal accessories. If electrical ac-
cessories exceed the capacity of
the motorcycle’s electrical sys-
tem, an electric failure could re-
sult, which could cause a
dangerous loss of lights or engine
power.
Aftermarket Tires an d Rims
The tires and rims that came with your
motorcycle were designed to match
the performance capabilities and to
provide the best combination of han-
dling, braking, and comfort. Other tires, rims, sizes, and combinations
may not be appropriate. Refer to page
7-14 for tire specifications and more in-
formation on replacing your tires.
Transportin
g the Motorcycle
Be sure to observe following instruc-
tions before transporting the motorcy-
cle in another vehicle. Remove all loose items from the
motorcycle.
Check that the fuel cock (if
equipped) is in the “OFF” position
and that there are no fuel leaks.
Point the front wheel straight
ahead on the trailer or in the truck
bed, and choke it in a rail to pre-
vent movement.
Shift the transmission in gear (for
models with a manual transmis-
sion).
Secure the motorcycle with tie-
downs or suitable straps that are
attached to solid parts of the mo-
torcycle, such as the frame or up-
per front fork triple clamp (and not,
for example, to rubber-mounted
handlebars or turn signals, or
parts that could break). Choose
UB4B83E0.book Page 4 Thursday, September 9, 2021 8:47 AM
Instrument and control functions
4-10
4
3. Install the rubber cap.
TIPWhen turning the damping force
adjuster in direction (a), the 0 click
position and the 1 click position
may be the same.
When turning the damping force
adjuster in direction (b), it may
click beyond the stated specifica-
tions, however such adjustments
are ineffective and may damage
the suspension.
EAU84390
Front fork blee din gWhen riding in extremely rough condi-
tions, the air temperature and pressure
in the front fork will rise. This will in-
crease the spring preload and harden
the front suspension. If this occurs,
bleed the air from each front fork leg.
WARNING
EWA10201
Always blee d b oth fork le gs, other-
wise poor han dlin g an d loss of sta-
b ility may result.To bleed the front fork legs1. Remove the protector.
2. Place the motorcycle on a suitable
stand. (See page 7-26.) 3. Make sure the front wheel is off
the ground and the area near the
bleed screws is clean.
4. Remove the bleed screws.
5. Wait a few seconds, and then in- stall the bleed screws.
6. Install the protector.
Compression dampin g settin g:
Minimum (soft):
20 click(s) in direction (b)
Standard:
10 (YZ85LW, YZ85LWN)
12 (YZ85, YZ85N) click(s) in di-
rection (b)
Maximum (hard): 1 click(s) in direction (b)
1. Protector
1
1. Bleed screw
1
UB4B83E0.book Page 10 Thursday, September 9, 2021 8:47 AM
For your safety – pre-operation checks
5-2
5
Rear brake • Check operation.
• If soft or spongy, have Yamaha dealer bleed hydraulic system.
• Check brake pads for wear.
• Replace if necessary.
• Check fluid level in reservoir.
• If necessary, add specified brake fluid to specified level.
• Check hydraulic system for leakage. 7-18, 7-19
Clutch • Check operation.
• Lubricate cable if necessary.
• Check lever free play.
• Adjust if necessary.
7-16
Throttle g rip • Make sure that operation is smooth.
• Check throttle grip free play.
• If necessary, adjust throttle grip free play. 7-13, 7-23
Drive chain • Check chain slack.
• Adjust if necessary.
• Check chain condition.
• Lubricate if necessary. 7-20, 7-22
Drive sprocket • Check the drive sprocket nut torque.
• Tighten if necessary.
—
Wheels an d tires •Check for damage.
• Check tire condition and tread depth.
• Check air pressure.
• Correct if necessary.
• Check for loose spokes and tighten if necessary. 7-14, 7-16
Shift ped al • Make sure that operation is smooth.
• Check the shift pedal bolt torque.
• Correct if necessary. 7-18
Brake ped al • Make sure that operation is smooth.
• Lubricate pedal pivoting point if necessary.
7-24
Brake an d clutch levers • Make sure that operation is smooth.
• Lubricate lever pivoting points if necessary.
7-23
ITEM CHECKS PAGE
UB4B83E0.book Page 2 Thursday, September 9, 2021 8:47 AM
Periodic maintenance an d a djustment
7-3
7
6 *YPVS • Check YPVS for carbon deposits and
cracks or damage. √√
• Clean. √√
7 *Clutch • Check clutch housing, friction plates,
clutch plates and clutch springs for wear
or damage.
•Adjust. √√
• Replace. √
8 *Transmission • Change the transmission oil.
√√
• Check transmission for damage. √
• Replace bearings. √
9 *Shift forks, g
uide bars,
shift cam • Check all parts for wear and damage.
• Replace if necessary.
√
10 *Rotor nut (flywheel
ma
gneto) •Tighten.
√√
11 *Kickstarter system • Check idle gear for damage.
• Replace if necessary. √
12 *Exhaust system • Check exhaust pipe and muffler for carbon
deposits. √√
• Clean. √
13 *Crankshaft • Check crankshaft for carbon deposits and
damage. √√
• Clean. √√
14 *Car buretor • Check carburetor settings and for obstruc-
tions. √√
• Adjust and clean. √√
NO. ITEM
ROUTINEAfter
break-
in Every race Every thir
d
race Every fifth
race As require
d
UB4B83E0.book Page 3 Thursday, September 9, 2021 8:47 AM
Periodic maintenance an d a djustment
7-6
7
EAU42012
TIP Hydraulic brake service
• Regularly check and, if necessary, correct the brake fluid levels.
• Every two years replace the internal components of the brake master cylinders and calipers, and change the brake fluid.
• Replace the brake hoses every four years and if cracked or damaged.29 *Tires an d wheels • Check tire air pressure, wheel runout,
spokes for looseness, and tires for wear. √√
• Tighten sprocket bolts if necessary. √√
• Check wheel bearings for looseness. √
• Lubricate wheel bearings with lithium- soap-based grease. √
• Replace wheel bearings. √
30 *Movin
g parts an d ca-
b les • Lubricate.
√√
31 *Throttle grip • Check operation.
• Check throttle grip free play, and adjust if
necessary.
• Lubricate cable and grip housing. √√
NO. ITEM ROUTINE
After
break-
in Every race Every thir
d
race Every fifth
race As require
d
UB4B83E0.book Page 6 Thursday, September 9, 2021 8:47 AM
Periodic maintenance an d a djustment
7-15
7
NOTICE
ECA15582
Make sure the bead stopper is
ti g htene d. A loose bead stopper
will cause the tire to slip off the
rim if tire pressure is too low.
Make sure the valve stem is po-
sitioned straight. A tilte d valve
stem in dicates that the tire has
slippe d from its ori ginal position
on the rim. Rotate the tire so
that the valve stem is positione d
straig ht.If the center tread depth reaches the
specified limit, if the tire has a nail or
glass fragments in it, or if the sidewall
is cracked, have a Yamaha dealer re-
place the tire immediately.
Tire information
This model is equipped with tube tires.
Tires age, even if they have not been
used or have only been used occasion-
ally. Cracking of the tread and sidewall rubber, sometimes accompanied by
carcass deformation, is an evidence of
ageing. Old and aged tires shall be
checked by tire specialists to ascertain
their suitability for further use.
WARNING
EWA10462
The front an
d rear tires shoul d b e of
the same make an d d esi gn, other-
wise the han dlin g characteristics of
the vehicle may b e different, which
coul d lea d to an acci dent.After extensive tests, only the tires list-
ed below have been approved for this
model by Yamaha.
WARNING
EWA14391
Have a Yamaha dealer replace
excessively worn tires. Operat-
in g the motorcycle with exces-
sively worn tires d ecreases
ri din g sta bility an d can lead to
loss of control.
The replacement of all wheel-
and b rake-relate d parts, inclu d-
in g the tires, shoul d b e left to a
Yamaha dealer, who has the
necessary professional knowl-
e dge an d experience.
It is not recommen ded to patch
a punctured tube. If unavoi d-
a b le, however, patch the tu be
very carefully an d replace it as
soon as possi ble with a hi gh-
quality pro duct.
Minimum tire trea d d epth (front an d
rear):
4.0 mm (0.16 in)
Front tire:Size:70/100-17 40M (YZ85, YZ85N)
70/100-19 42M (YZ85LW,
YZ85LWN)
Manufacturer/model:
DUNLOP/MX3SF
Rear tire:
Size:90/100-14 49M (YZ85, YZ85N)
90/100-16 52M (YZ85LW,
YZ85LWN)
Manufacturer/model: DUNLOP/MX3S
UB4B83E0.book Page 15 Thursday, September 9, 2021 8:47 AM